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ranyai12
Help Please! Find the inverse laplace of F(s)= (e^(-1s)-e^(-4s))/s^3
@TuringTest I ended up getting (1/2)((t-1)^2)(t-1)-(t-4)^2)(t-4) and it's wrong :(
See http://www.wolframalpha.com/input/?i=inverse+laplace++%28e%5E%28-1s%29-e%5E%28-4s%29%29%2Fs%5E3 your (t-1) and (t-4) terms should be step functions.